The little spheres represent water molecules. Molecules are in constant motion. The attractions water molecules have for each other keep them close together. They can move past each other, but their ...

As a liquid, the molecules are more randomly arranged and the molecules are able to slide past each other. As energy is added, the motion of the molecules increases and begins to overcome the ...

This motion results from the constant, random bombardment of the suspended particles by the molecules of the surrounding fluid. Initially, Brown noted the jittery motion of pollen grains in water and ...

in liquids the molecules move, in solids they do not (usually). There are several important interactions which are not seen in liquids because molecular motion causes their average value to become ...

Fluid dynamics is the study of the motion of liquids, gases and plasmas. Flow is dependent on the intrinsic properties of the matter itself, such as compressibility, viscosity and density.